Insulating package



March 15, 1932. H. c. HINKLEY INSULATING PACKAGE 7 FilBd Dec. 17, 1930 INVENTOR firemen/2k;

[@014 9 ATTORNEYS Patented Mar. 15, 1932 UNITED STATES PATENTI'OFFICE HORACE O. HINKLEY, OF KEOKUK, IOWA, ASSIGNOR T IOWA CAN COMPANY, OF 3 KEOKUK, IOWA, A CORPORATION OF IOWA Y INSULATING PACKAGE Application filed December 17, 1930. Serial No, 503,045.

This invention relates to insulating containers, and aims' generally to provide a container of improved construction made almost entirely out of corrugated fibre board, which may be used to hold a can of ice cream or the like and which may also hold a piece of dry ice to preserve the ice cream.

In the accompanying drawings forming a part of this specification,

Fig. 1 is a longitudinal sectional view through the improved container, showing a can: inside in elevation;

Fig. 2 is a cross sectional view through the container and can;

Fig. 3 is a detail section showing how the joint in the insulating liner is made when single face corrugated board is used; and

Fig. 4 is a view similar to Fig. 3, but showing how the joint is made when double face corrugated board is used.

Referring particularly to the drawings, there is shown an insulating container comprising a generally cylindrical body 5, pref erably; of paper board, closed by flanged lids 6 and 7 at its opposite ends. Within the body is a corrugated board liner of at least two thicknesses of material, if the corrugated board is single face, or of at least one thickness, if the corrugated board is double face. a o This liner is so placed within the cylindrical r body 5 that the air spaces between the individual corrugations extend longitudinally of the body, as shown. When single face board 8 is used (Fig. 3) the two thicknesses are so cut as to fit, one inside the other, within the body 5, with the joint 9 of the inner single face board staggered or displaced angularly several forms neither shown nor described.

relative to the joint 10 of the outer thickness of board. The two layers of single face board may be united by a little glue or with one or more staples (not shown) to prevent the joints 9, 10 from becoming alined, which would leave a narrow air gap at one point in the periphery of the liner, thus diminishing .its efliciency as an insulating wall. In the case of double face board 8 (Fig. 4:) no shifting of the layers is possible, unless more than.

one thickness of double face board is used. In this event, relative movement may be ob 0 viated by a little glue uniting the outer face of the inner layer with theinner face of the outer layer, as will be understood without illustration. In any case, when the liner is in position, the joint is substantially closed to air currents, so that the article within the container is well insulated.

Between-the ends of the liner. and the ends of the outer container, insulating media in the form of heavy, disks 11, 12 are'placed. These are preferably of double face ,corr'ugated board, as shown. Withinthe closed compartment formed by the liner and the disks 11, 12, the ice cream can 13 or other article is placed. Preferably the inside di ameter of the liner but slightly exceeds the outside diameter of the can, so that a very narrow space is left between them. However, between the top of can 13and the top disk 11, a fairly large space may be left, as

shown in Fig. 1, and inthis space a piece of dry ice or solidified carbon dioxide (not 1 shown) may be placed. The vapors from this material will slowly move downwardly past the sides of the can and will gradually displace the warm air initially in the container, the warm air being slowly expelled, because of the slightly higher pressure within the container, out through the ends underneath the flanges of the caps.

The described contamer is of the simplest 8o and most inexpensive construction, and yet it is most satisfactory as a container to hold ice cream cans for considerable periods of time without deterioration of the container or of the ice cream.

Obviously, the invention has other uses and applications and may be embodied in 5 combination, a container consisting of a cyof layers of corrugated board located between the ends of the aforesaid liner and the flanged caps. v

2. An insulating package comprislng, 1n

lindrical paper body and two flanged caps closing the opposite-ends of the body; a liner' of a plurality of layers of single face corrugated board inside the container, said liner being truly annular in cross-section and having a lapped joint extending longitudinally; said lapped joint being formed by staggering :the joints in the several layers of flexible corrugated board; and insulating spacers of a ,plurality of layers of corrugated board located within each of the flanged caps.

3. An insulating package comprising, in combination, a container consisting of a cylindrical paper body; a liner of corrugated board inside the container, said liner being truly annular incross sectio'n' and having a lapped joint extending longitudinally; said lapped joint being so constructed and arranged that the liner has exactly the same thickness at the joint as elsewhere, the overlapping parts'being disunited but preventing the movement of convection currents at the joint; and insulating means between the ends of the liner and the ends of the paper body.

In testimony that I claim the foregoing as my own, I havehereto aflixed my signature.

H. .I-IINKLEY. 

